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OpenURL and SFX@Emory. Selden Deemer libssd@emory.edu Emory University Libraries. Imagine a library where everything is shelved by accession number …. URLs and the Web. The World Wide Web is woven from URLs Most URLs act like shelf addresses or accession numbers. Finding Things with URLs.
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OpenURL and SFX@Emory Selden Deemer libssd@emory.edu Emory University Libraries
Imagine a library where everything is shelved by accession number… URLs and the Web • The World Wide Web is woven from URLs • Most URLs act like shelf addresses or accession numbers GLA/COMO
Finding Things with URLs • Most URLs are not particularly useful finding aids, because they contain no inherent information (metadata) about the target • What if the specific item you want isn’t available? http://www.library.emory.edu/2003_0411_163108AA.JPG GLA/COMO
OpenURL Call Number Analogy • A call number is more than a way to find a book; it contains implicit metadata • QL 696 .C9 can be decomposed to: • A call number can be used as a starting point for other copies, similar works, and services QL Zoology 696 Birds, systematic list (subdivisions, A-Z) .C9 Cypseli (Swifts) GLA/COMO
Origins of OpenURL • Some URLS have structure implying content: http://muse.jhu.edu/journals/callaloo/v024/24.3alexander.html • The same work from a different source: http://links.jstor.org/sici?sici=0161-2492%28198921%290%3A39%3C265%3ATVH%28%3E2.0.CO%3B2-P • What if everybody agreed to create “fat”URLs following standardized rules? GLA/COMO
The OpenURL 0.1 Framework • OpenURL 0.1 defines a standardized way to “fatten” a URL with metadata describing the work that is being sought: http://www.galileo.usg.edu/sfx_emory?genre=article&aulast=alexander&aufirst=elizabeth&atitle=Venus%20Hottentot&title=callaloo&issn=0161-2492&eissn=1080-6512&date=2001&volume=24&issue=3&spage=688&epage=691 GLA/COMO
OpenURL 0.1 and 1.0 • OpenURL 0.1 is a de facto standard that is built around scholarly bibliographic data • OpenURL 1.0 is a proposed NISO standard that generalizes the OpenURL concept to support open linking in various communities • An OpenURL registry allows communities to register different metadata formats • OCLC is hosting the (read-only) OpenURL registry during the trial period GLA/COMO
OpenURL Link Resolution • Key concepts developed at University of Ghent and Los Alamos National Laboratories (1998-2000), and licensed to Ex Libris for their SFX product • An OpenURL does not point directly to the actual item (e.g. a link from a record in an A&I database to the corresponding full-text) • OpenURL provides a link that transports metadata about the referenced item to a Link Resolver • The Link Resolver determines what versions of the work are available, and may offer other services GLA/COMO
GETS/GALILEO SFX Project • After almost two years of evaluation, GALILEO recommended SFX early 2003 • Emory, Georgia State, Georgia Tech, and UGA, with GALILEO are engaged in a pilot project to implement SFX in a consortial setting • The SFX server is managed by GALILEO staff • Each participant manages a local instance of SFX, including a localized SFX KnowledgeBase and configuration files GLA/COMO
The SFX KnowledgeBase • The KnowledgeBase includes information about approximately 400,000 SFX sources, targets, and services • It also includes rules that determine the relevance of specific services in a specific context • Updates to the KnowledgeBase are made available monthly, and are applied by GALILEO staff • Local changes to records in the KnowledgeBase are protected from updates GLA/COMO
SFX Instances • GALILEO staff manage a central instance of the SFX KnowledgeBase for centrally purchased targets and sources • The Emory SFX instance is used to manage all other resources • The appearance and content of the Emory SFX services menu is entirely under our control • The Emory SFX services menu presented to users may contain a seamless mix of targets from the GALILEO and Emory instances GLA/COMO
Key SFX Concepts and Terms • Source: An OpenURL-enabled information resource in which users begin their search (e.g., Historical Abstracts, MEDLINE) • Services: Facilities offered to the end user, based on information the end user is examining • Menu: A list of services relevant at a specific context, and displayed by the SFX server • Target: An information source or service where a user lands as a result of following an SFX Service link GLA/COMO
SFX Services • A link resolver can offer a range of services based on metadata in the OpenURL: • Full text • Abstract or Table of Contents • Document Delivery • Interlibrary Loan • Union Catalog Search • Web Search • More… GLA/COMO
SFX Services Menu Alexander, Elizabeth. The Venus Hottentot (1825)Callaloo - Volume 24, Number 3, Summer 2001 GLA/COMO
Citation Linker GLA/COMO
OpenURL Generator GLA/COMO
GETS SFX Project Links Citation Linker: http://www.galileo.usg.edu/sfx_emory/citation OpenURL Generator: http://www.galileo.usg.edu/sfx_emory Georgia Tech eJournals Web Page: http://www.library.gatech.edu/search_locate/electronic_journals.html More Information: google for sfx faq GLA/COMO
References Cummings, J. and R. Johnson (2003). “The Use and Usability of SFX: Context-Sensitive Reference Linking.”Library Hi-Tech21(1): 70-84. Van de Sompel, H. and O. Beit-Arie (2001). "Open Linking in the Scholarly Information Environment Using the OpenURL Framework." D-Lib Magazine7(3). Van de Sompel, H. and O. Beit-Arie (2001). "Generalizing the OpenURL Framework beyond References to Scholarly Works : The Bison-Futé Model." D-Lib Magazine7(7/8). Walker, J. (2001). "Open linking for libraries: the OpenURL framework." New Library World102(1163/1164): 127-133. GLA/COMO